I was suggesting going through all three adventures three times.
This is one of the techniques I use to tackle new material. I go over it once quickly. The second time I go over it I try to raise the quality up a bit not perfect it. The third time I go through it and bring it up to they level I wanted to be.
This is often easier for me than trying to get it up to snuff the first time around.
You can use your judgment on this. If the first adventure was easy for you, wait to apply this strategy until he gets a little more demanding.
It’s a strategy for learning… Not a hard fast rule.